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Find Q1, the median, Q3 and the IQR of 5, 8, 12, 15, 19, 23, 30.
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
Find Q1, the median, Q3 and the IQR of .
Need a reminder? The key ideaShow
Range = largest smallest. Q1 and Q3 are the medians of the lower and upper halves (leave the median out when the count is odd), and IQR .
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. Median. The 4th value, .
Step 2. The halves. Leave the out: the lower half is and the upper half is .
Step 3. Q1 and Q3. and .
Step 4. IQR. .
Answer: , median , , IQR .
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